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Sandra Loosemore 02ce382cd3 Use a non-empty test program to test ability to link. 
On bare-metal targets, I/O support is typically provided by a BSP and
requires a linker script and/or hosting library to be specified on the
linker command line.  Linking an empty program with the default linker
script may succeed, however, which confuses libstdc++ configuration
when programs that probe for the presence of various I/O features fail
with link errors.

2020-02-12  Sandra Loosemore  <sandra@codesourcery.com>

	PR libstdc++/79193
	PR libstdc++/88999

	config/
	* no-executables.m4: Use a non-empty program to test for linker
	support.

	libgcc/
	* configure: Regenerated.

	libgfortran/
	* configure: Regenerated.

	libiberty/
	* configure: Regenerated.

	libitm/
	* configure: Regenerated.

	libobjc/
	* configure: Regenerated.

	libquadmath/
	* configure: Regenerated.

	libssp/
	* configure: Regenerated.

	libstdc++v-3/
	* configure: Regenerated.
2020-02-12 13:22:07 -08:00
..
acinclude.m4
…
acx.m4
re PR jit/85384 (libgccjit does not work if --with-gcc-major-version is used)
2018-04-18 11:46:58 +02:00
asmcfi.m4
libitm: Configure for gas cfi pseudo ops.
2011-11-09 10:09:53 -08:00
ax_check_define.m4
re PR target/78478 (Compile Error for i386-rtems)
2017-01-19 22:00:53 +01:00
ax_count_cpus.m4
Generalize getconf _NPROCESSORS_ONLN
2019-05-30 09:06:48 +00:00
ax_pthread.m4
Add ax_pthread.m4 for use in binutils-gdb
2018-05-09 11:25:27 -04:00
bitfields.m4
Improve the test in bitfields.m4
2015-05-05 03:41:53 +00:00
bootstrap-asan.mk
Add support for ASan odr_indicator.
2016-12-02 09:39:27 +02:00
bootstrap-cet.mk
x86/CET: Add -fcf-protection to STAGE4_CFLAGS
2018-04-24 15:12:46 -07:00
bootstrap-debug-big.mk
…
bootstrap-debug-ckovw.mk
…
bootstrap-debug-lean.mk
Use compare-debug for bootstrap-debug-lean to ignore != DW_AT_producer
2017-11-15 03:11:37 +00:00
bootstrap-debug-lib.mk
…
bootstrap-debug.mk
…
bootstrap-lto-lean.mk
Filter out LTO in config/bootstrap-lto-lean.mk.
2019-04-16 15:24:53 +00:00
bootstrap-lto-noplugin.mk
re PR bootstrap/85571 (non-bootstrap-debug miscompare with trunk)
2018-05-08 08:50:33 +00:00
bootstrap-lto.mk
re PR lto/85574 (LTO bootstapped binaries differ)
2019-05-02 13:58:47 +00:00
bootstrap-O1.mk
…
bootstrap-O3.mk
…
bootstrap-Og.mk
Add a build config for bootstrapping at -Og
2019-07-08 06:21:11 +00:00
bootstrap-time.mk
…
bootstrap-ubsan.mk
Improve boostrap-ubsan config (PR bootstrap/64914).
2018-05-10 10:15:42 +00:00
cet.m4
x86/CET: Build target libraries with -mshstk
2018-04-24 09:41:01 -07:00
ChangeLog
Use a non-empty test program to test ability to link.
2020-02-12 13:22:07 -08:00
codeset.m4
…
depstand.m4
…
dfp.m4
Add missing '|' as wrong patch was applied.
2018-07-05 14:28:01 -06:00
elf.m4
sync config/* from binutils
2016-12-08 09:46:03 +10:30
enable.m4
…
extensions.m4
…
futex.m4
[ARM/FDPIC v6 02/24] [ARM] FDPIC: Handle arm*-*-uclinuxfdpiceabi in configure scripts
2019-09-10 09:37:00 +02:00
gc++filt.m4
…
gcc-plugin.m4
gcc-plugin.m4 (GCC_ENABLE_PLUGINS): Remove -q option passed to grep.
2018-02-06 08:30:53 +00:00
gettext-sister.m4
…
gettext.m4
re PR other/66259 (Combined gcc and binutils build from git-master fails, with gas/as-new not existing)
2015-07-24 12:20:44 -06:00
glibc21.m4
…
gthr.m4
Create GCN-specific gthreads
2019-06-25 11:41:29 +00:00
gxx-include-dir.m4
…
hwcaps.m4
Build libgo with -Wa,-nH if possible (PR go/78978) [non-libgo parts]
2017-01-06 14:33:47 +00:00
iconv.m4
iconv.m4 (AM_ICONV_LINK): Don't overwrite CPPFLAGS.
2018-11-07 15:41:21 -07:00
intdiv0.m4
…
inttypes_h.m4
…
inttypes-pri.m4
…
inttypes.m4
…
isl.m4
isl.m4: Remove support for ISL 0.14.
2017-02-13 08:54:02 +00:00
largefile.m4
…
lcmessage.m4
…
ld-symbolic.m4
…
lead-dot.m4
…
lib-ld.m4
…
lib-link.m4
Fixes after recent configure changes relating to static libraries
2020-02-01 00:34:28 +00:00
lib-prefix.m4
…
libstdc++-raw-cxx.m4
Remove "-I" from LIBSTDCXX_RAW_CXX_LDFLAGS
2013-01-07 10:23:42 -08:00
lthostflags.m4
…
math.m4
Update GCC to autoconf 2.69, automake 1.15.1 (PR bootstrap/82856).
2018-10-31 17:03:16 +00:00
mh-alpha-linux
Install back PR target/47230 fix (Revert the revert).
2015-03-27 18:08:44 +01:00
mh-cygwin
…
mh-darwin
re PR target/65351 (libiberty's pic version contains non-pic code on m32 darwin; causes bootstrap fail building libcc1.)
2015-04-10 06:43:52 +00:00
mh-djgpp
…
mh-mingw
mh-mingw: Also set __USE_MINGW_ACCESS flag for C++ code.
2019-03-18 22:36:56 +00:00
mh-pa
…
mh-pa-hpux10
…
mh-ppc-aix
mh-ppc-aix (LDFLAGS): Quote $(CC).
2012-05-03 15:39:07 +00:00
mmap.m4
mmap.m4: Use *vms* instead of vms*.
2012-04-03 12:07:28 +00:00
mt-alphaieee
…
mt-android
configure.ac (*-*-linux-android*): Set target_makefile_frag.
2017-06-03 08:23:22 +00:00
mt-d30v
…
mt-gnu
re PR target/43538 (config/mt-gnu CXXFLAGS_FOR_TARGET)
2014-04-25 08:03:08 +00:00
mt-mips16-compat
…
mt-mips-elfoabi
…
mt-mips-gnu
…
mt-nios2-elf
configure.ac (target_makefile_frag): Set for nios2-*-elf*.
2014-05-14 19:20:59 -04:00
mt-ospace
mt-ospace (CFLAGS_FOR_TARGET): Append -g -Os rather than overwriting.
2014-11-18 15:12:52 -07:00
mt-sde
mt-sde: Change -mcode-xonly to -mcode-readable=pcrel.
2012-09-19 20:42:01 +00:00
mt-spu
…
multi.m4
Add D front-end, libphobos library, and D2 testsuite.
2018-10-28 19:51:47 +00:00
nls.m4
…
no-executables.m4
Use a non-empty test program to test ability to link.
2020-02-12 13:22:07 -08:00
override.m4
Update GCC to autoconf 2.69, automake 1.15.1 (PR bootstrap/82856).
2018-10-31 17:03:16 +00:00
picflag.m4
Update configure deps, remove stray \xA0 in picflag.m4, regenerate
2017-01-04 18:59:34 +10:30
plugins.m4
Use dlsym to check if libdl is needed for plugin
2018-04-05 10:49:39 -07:00
po.m4
re PR other/66259 (Combined gcc and binutils build from git-master fails, with gas/as-new not existing)
2015-07-24 12:20:44 -06:00
proginstall.m4
…
progtest.m4
…
sjlj.m4
sjlj.m4: New file.
2015-05-13 21:15:31 +00:00
stdint_h.m4
…
stdint.m4
re PR other/66259 (Combined gcc and binutils build from git-master fails, with gas/as-new not existing)
2015-07-24 12:20:44 -06:00
target-posix
[PATCH 2/4] OpenMP 4.0 offloading to Intel MIC: liboffloadmic.
2014-11-13 14:03:17 +00:00
tcl.m4
re PR other/66259 (Combined gcc and binutils build from git-master fails, with gas/as-new not existing)
2015-07-24 12:20:44 -06:00
tls.m4
[ARM/FDPIC v6 02/24] [ARM] FDPIC: Handle arm*-*-uclinuxfdpiceabi in configure scripts
2019-09-10 09:37:00 +02:00
toolexeclibdir.m4
Add `--with-toolexeclibdir=' configuration option
2020-01-24 11:24:25 +00:00
uintmax_t.m4
…
ulonglong.m4
…
unwind_ipinfo.m4
…
warnings.m4
* warnings.m4: Fix comment.
2015-05-27 16:40:38 -04:00
weakref.m4
Remove obsolete Tru64 UNIX V5.1B support
2012-03-12 15:35:56 +00:00
zlib.m4
This patch syncs zlib.m4 with binutils-gdb and uses AM_ZLIB from zlib.m4
2015-07-14 07:25:35 -07:00